Sports history, made in the Arroyo Seco.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Oldest building in California still in use.

Giant nude woman of Tijuana is also the artist's home.

This historic tower in the California desert promises visitors a "vortex of good vibes".

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

This giant temperature attraction created some giant electric bills.

Early prototype for Frank Lloyd Wright's Guggenheim.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A winged-helmed, sword-brandishing tribute to German Americans.

A town honors its legacy of traditional American Indian pipe carving with one gigantic pipe.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The palatial McDonald's that inspired Wesley Willis.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

This historic hotel invented the chocolate brownie.